Nearly 40 years ago, General Motors invented the rare-earth magnet and thus laid the foundation for modern electric motors. But now the automaker is moving on to a different technology. GM recently announced a partnership with Niron Magnetics, a Minnesota-based company that claims to have developed automotive-grade permanent-magnet motors without...Nearly 40 years ago, General Motors invented the rare-earth magnet and thus laid the foundation for modern electric motors. But now the automaker is moving on to a different technology. GM recently announced a partnership with Niron Magnetics, a Minnesota-based company that claims to have developed automotive-grade permanent-magnet motors without...
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